- Protons and neutrons are baryons, which are composite particles made of quarks, so they both have 'yes' for quark composition.
- Electrons are elementary particles classified as leptons and are not made of quarks, so they have 'no' for quark composition.
- The final answers are: A = \(\boxed{yes}\), B = \(\boxed{yes}\), C = \(\boxed{no}\).
Explanation
- Classifying Subatomic Particles
The problem asks us to identify the quark composition of subatomic particles based on their classification in particle physics. To solve this, we categorize the particles into two main groups: hadrons and leptons. Hadrons, which include baryons like protons and neutrons, are composite particles held together by the strong force and are made of smaller constituents called quarks. Leptons, on the other hand, such as the electron, are considered elementary particles, meaning they do not have a known internal structure and are not composed of smaller particles like quarks.
- Determining Quark Composition
Now, we apply these physics principles to the specific particles in the table:
- Proton: A proton is a baryon composed of three quarks (two up quarks and one down quark). Therefore, it is made of quarks.
- Neutron: A neutron is also a baryon, composed of three quarks (one up quark and two down quarks). Like the proton, it is made of quarks.
- Electron: An electron is classified as a lepton. As an elementary particle, it does not consist of smaller sub-particles and is not made of quarks.
Based on this, we can conclude: A = yes, B = yes, and C = no.
Examples
In the study of nuclear physics and chemistry, understanding the composition of atoms is fundamental. When scientists study how isotopes behave or how different types of radiation are emitted, they rely on knowing that protons and neutrons (the nucleons) are composite particles made of quarks, which affects how they interact via the strong nuclear force, while electrons, as fundamental leptons, interact differently. This distinction is crucial for understanding everything from radioactive decay to the basic structure of the periodic table.